CN108173242A - Motor-pumped well control cabinet and control method - Google Patents

Motor-pumped well control cabinet and control method Download PDF

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Publication number
CN108173242A
CN108173242A CN201711374596.1A CN201711374596A CN108173242A CN 108173242 A CN108173242 A CN 108173242A CN 201711374596 A CN201711374596 A CN 201711374596A CN 108173242 A CN108173242 A CN 108173242A
Authority
CN
China
Prior art keywords
motor
pumped well
normal open
open switch
contactor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201711374596.1A
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Chinese (zh)
Other versions
CN108173242B (en
Inventor
李海轮
王振东
孙瑞鹏
王振国
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
State Grid Hebei Electric Power Co Ltd
Xingtai Power Supply Co of State Grid Hebei Electric Power Co Ltd
Nangong Power Supply Co of State Grid Hebei Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
State Grid Hebei Electric Power Co Ltd
Xingtai Power Supply Co of State Grid Hebei Electric Power Co Ltd
Nangong Power Supply Co of State Grid Hebei Electric Power Co Ltd
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Publication date
Application filed by State Grid Corp of China SGCC, State Grid Hebei Electric Power Co Ltd, Xingtai Power Supply Co of State Grid Hebei Electric Power Co Ltd, Nangong Power Supply Co of State Grid Hebei Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201711374596.1A priority Critical patent/CN108173242B/en
Publication of CN108173242A publication Critical patent/CN108173242A/en
Application granted granted Critical
Publication of CN108173242B publication Critical patent/CN108173242B/en
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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H02H7/09Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against over-voltage; against reduction of voltage; against phase interruption
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
    • H02H3/083Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for three-phase systems
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/22Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices

Abstract

The present invention provides a kind of motor-pumped well control cabinet and control method, including:A.C. contactor is released the button, the time relay, electric current relay;In major loop, A/B/C phases electricity connects the A/B/C phase electrical inputs of motor-pumped well motor respectively by the first/bis-/tri- normal open switch of the A.C. contactor respectively;The coil of the electric current relay is connected in series between the normal open switch of the A.C. contactor and the three-phase electrical input of the motor-pumped well motor;In secondary circuit, the 4th normal open switch of the A.C. contactor is connected in parallel with releasing the button, and one end connection C phase electricity of the 4th normal open switch of the A.C. contactor, the other end connects the first node;The first branch and the second branch are connected in parallel between first node and the second node;The second Node connectedness B phases electricity.Motor-pumped well control cabinet provided by the invention and control method can be automatically cut off the power when motor-pumped well control cabinet no-load running, avoid idling consumption, save electric energy.

Description

Motor-pumped well control cabinet and control method
Technical field
The invention belongs to electic protection and control technology fields, are to be related to a kind of motor-pumped well control cabinet and control more specifically Method processed.
Background technology
Agriculture row's motor-pumped well is multi-point and wide-ranging, and motor-pumped well water pump motor works or so 10 hours daily, when pump motor is stopped transport, motor-pumped well Many elements such as ac contactor coil, the current transformer of control cabinet keep whole day energized state, and motor-pumped well water pump motor is stopped transport In the case of, the standby mode consume in one day of a motor-pumped well motor control box reaches 1.5kWh, therefore, the zero load of motor-pumped well motor control box Operation causes huge waste of energy.
Invention content
The purpose of the present invention is to provide a kind of motor-pumped well control cabinet and control methods, it is intended to solve motor-pumped well motor control box No-load running causes the problem of huge waste of energy.
To achieve the above object, the embodiment of the present invention provides a kind of motor-pumped well control cabinet, including:A.C. contactor, unlatching are pressed Button, the time relay, electric current relay;
In major loop, first normal open switch one end of the A.C. contactor is used to connect the A phases electricity in three phase mains, separately One end is used to connect the A phase electrical inputs of motor-pumped well motor;Second normal open switch one end of the A.C. contactor is for connection three B phases electricity in phase power supply, the other end are used to connect the B phase electrical inputs of motor-pumped well motor;The third of the A.C. contactor is normally opened Switch one end is used to connect the C phases electricity in three phase mains, and the other end is used to connect the C phase electrical inputs of motor-pumped well motor;
The A phases electricity that the coil of the electric current relay is connected in series in first normal open switch and the motor-pumped well motor is defeated Enter end between or second normal open switch and the B phase electrical inputs of the motor-pumped well motor between or the third it is normally opened Between switch and the C phase electrical inputs of the motor-pumped well motor;
In secondary circuit, the 4th normal open switch of the A.C. contactor is connected in parallel with releasing the button, and the exchange connects One end connection C phase electricity of 4th normal open switch of tentaculum, the other end connect the first node;The first branch is in parallel with the second branch to be connected It is connected between first node and the second node;The second Node connectedness B phases electricity;
The first branch includes time relay coil and electric current relay normally closed switch, the time relay coil It is connected in series with the electric current relay normally closed switch;
The second branch include the ac contactor coil, the time relay normally closed switch and the electric current after Electric appliance normal open switch, the ac contactor coil are connected in series with the time relay normally closed switch, the time relay Device normally closed switch is connected in parallel with the electric current relay normal open switch.
Further, the motor-pumped well control cabinet, further includes:Electric energy meter;The electric energy meter is connected in series in Between the B phases electricity and second node, for measuring and showing the electricity consumption of motor-pumped well motor.
Further, the motor-pumped well control cabinet further includes:Phase failure protector;The first coil string of the phase failure protector Connection is connected between the first normal open switch of the A.C. contactor and the A phase electrical inputs of the motor-pumped well motor, the disconnected phase The B phases electricity that second coil of protector is connected in series in the second normal open switch and the motor-pumped well motor of the A.C. contactor is defeated Between entering end, the tertiary coil of the phase failure protector be connected in series in the third normal open switch of the A.C. contactor with it is described Between the C phase electrical inputs of motor-pumped well motor;The normally closed switch of the phase failure protector is connected in series in second node and institute State B phases electricity between.
Further, the motor-pumped well control cabinet further includes:Multiple indicator lights;First indicator light one end is used for and the electricity The A phases electrical input connection of machine, the other end are connect with the neutral conductor;Second indicator light one end is used for defeated with the B phases of motor electricity Enter end connection, the other end is connect with the neutral conductor;Third indicator light one end with the C phase electrical inputs of the motor for connecting, separately One end is connect with the neutral conductor.
Further, the motor-pumped well control cabinet further includes:Breaker;First normal open switch of breaker is connected in series with Between the first normal open switch of the A.C. contactor and the A phase electrical inputs of the motor-pumped well motor;The breaker second Normal open switch be connected in series in the second normal open switch of the A.C. contactor and the motor-pumped well motor B phases electrical input it Between;The breaker third normal open switch is connected in series in the third normal open switch of the A.C. contactor and the motor-pumped well motor C phase electrical inputs between.
Further, the motor-pumped well control cabinet further includes:Fuse;The fuse is connected in series in the C phases electricity Between described release the button, for when secondary loop current be more than predetermined threshold value when disconnect described in release the button and the C phases The connection of electricity.
Further, it is described to release the button as wink ejector half button.
Further, the A.C. contactor is 380V A.C. contactors.
The embodiment of the present invention also provides a kind of motor-pumped well control method based on the motor-pumped well control cabinet, includes the following steps:
It is described release the button be pressed after, the motor-pumped well control cabinet is started to work, the coil electrification of the A.C. contactor, 4th normal open switch of the A.C. contactor is closed, and realizes the A.C. contactor self-locking, while the A.C. contactor First normal open switch, the second normal open switch, third normal open switch are closed, and the coil of the time relay is powered;
The coil of the time relay, which is powered, starts timing, if reaching motor-pumped well before the setting time of the time relay Motor start switch is opened, major loop conducting, and the coil electrification of the electric current relay, the normally opened of the electric current relay opens It closes and closes, secondary circuit stablizes conducting, the motor-pumped well motor normal work;
If the motor-pumped well motor start switch is not activated before reaching the setting time of the time relay, major loop without Electric current, the coil of the electric current relay is not charged, and normal open switch and the normally closed switch of the electric current relay are failure to actuate, described Time relay normally closed switch is disconnected when reaching the time relay setting time, and secondary circuit disconnects, the motor-pumped well control Case processed is stopped;
After the motor-pumped well motor start switch is closed, major loop no current, the coil losing electricity of the electric current relay, institute State the normal open switch disconnection of electric current relay, the normally closed switch of the electric current relay is closed, the coil of the time relay Electrification starts timing, and when reaching setting time, the time relay normally closed switch disconnects, the deactivation coil of the A.C. contactor Electricity, the first normal open switch of the A.C. contactor, the second normal open switch, third normal open switch in major loop disconnect, cut-out master Ring current.
Further, the setting time of the electric current relay is 5 minutes.
The advantageous effect of motor-pumped well control cabinet provided in an embodiment of the present invention is:Compared with prior art, the present invention is implemented A kind of motor-pumped well control cabinet and control method that example provides, including A.C. contactor, release the button, the time relay, electric current relay Device;In major loop, first normal open switch one end of the A.C. contactor is used to connect the A phases electricity in three phase mains, the other end For connecting the A phase electrical inputs of motor-pumped well motor;Second normal open switch one end of the A.C. contactor is used to connect three-phase electricity B phases electricity in source, the other end are used to connect the B phase electrical inputs of motor-pumped well motor;The third normal open switch of the A.C. contactor One end is used to connect the C phases electricity in three phase mains, and the other end is used to connect the C phase electrical inputs of motor-pumped well motor;The electric current after The coil of electric appliance is connected in series between first normal open switch and the A phase electrical inputs of the motor-pumped well motor or described Between second normal open switch and the B phase electrical inputs of the motor-pumped well motor or the third normal open switch and the motor-pumped well electricity Between the C phase electrical inputs of machine;In secondary circuit, the 4th normal open switch of the A.C. contactor is in parallel with releasing the button even It connects, one end connection C phase electricity of the 4th normal open switch of the A.C. contactor, the other end connects the first node;The first branch with The second branch is connected in parallel between first node and the second node;The second Node connectedness B phases electricity;Described first Road includes time relay coil and electric current relay normally closed switch, and the time relay coil and the electric current relay are normal Make and break pass is connected in series with;The second branch includes the ac contactor coil, the time relay normally closed switch and institute Electric current relay normal open switch is stated, the ac contactor coil is connected in series with the time relay normally closed switch, described Time relay normally closed switch is connected in parallel with the electric current relay normal open switch.Motor-pumped well control cabinet provided by the invention and control Method processed is automatically cut off the power when motor-pumped well control cabinet no-load running, avoids idling consumption, saves electric energy.
Description of the drawings
Fig. 1 is the structure diagram of motor-pumped well control cabinet provided in an embodiment of the present invention.
Reference numeral:A phases electricity A, B phases electricity B, C phases electricity C, the coil KM of A.C. contactor, the first normal open switch KM1, first Normal open switch KM2, the first normal open switch KM3, the first normal open switch KM4, the coil KA of electric current relay, electric current relay it is normal KA1, the normal open switch KA2 of electric current relay, the coil KT of the time relay, the normally closed switch KT1 of the time relay are closed in make and break, Motor-pumped well motor M.
Specific embodiment
In order to which technical problems, technical solutions and advantages to be solved are more clearly understood, tie below Accompanying drawings and embodiments are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only To explain the present invention, it is not intended to limit the present invention.
Specific embodiment:
As shown in Figure 1, a kind of motor-pumped well control cabinet, including:A.C. contactor is released the button, the time relay, electric current relay Device;
In major loop, first normal open switch KM1 one end of the A.C. contactor is used to connect the A phases in three phase mains Electricity, the other end are used to connect the A phase electrical inputs of motor-pumped well motor M;It uses second normal open switch KM2 one end of the A.C. contactor In connecting the electricity of the B phases in three phase mains, the other end is used to connect the B phase electrical inputs of motor-pumped well motor M;The A.C. contactor Third normal open switch KM3 one end is used to connect the C phases electricity in three phase mains, and the C phases electricity that the other end is used to connect motor-pumped well motor M is defeated Enter end;
The coil of the electric current relay is connected in series in the A phases of the first normal open switch KM1 and the motor-pumped well motor M It is between electrical input or between the B phase electrical inputs of the second normal open switch KM2 and motor-pumped well motor M or described Between the C phase electrical inputs of the third normal open switch KM3 and motor-pumped well motor M;
In secondary circuit, the 4th normal open switch KM4 and SB that releases the button of the A.C. contactor is connected in parallel, the friendship One end connection C phase electricity of the 4th normal open switch KM4 of contactor is flowed, the other end connects the first node;The first branch with second Road is connected in parallel between first node and the second node;The second Node connectedness B phases electricity;The SB use of releasing the button In the startup motor-pumped well control cabinet.
The first branch includes time relay coil KT and electric current relay normally closed switch KA1, the time relay Device coil KT is connected in series with the electric current relay normally closed switch KA1;
The second branch include the ac contactor coil KM, the time relay normally closed switch KT1 with it is described Electric current relay normal open switch KA2, the ac contactor coil KM connect company with the time relay normally closed switch KT1 It connects, the time relay normally closed switch KT1 is connected in parallel with the electric current relay normal open switch KA2.
The course of work of the motor-pumped well control cabinet provided in an embodiment of the present invention is:After the SB that releases the button is pressed, The motor-pumped well control cabinet is started to work, the coil KM electrifications of the A.C. contactor, and the 4th of the A.C. contactor normally opened opens It closes KM4 to be closed, realizes the A.C. contactor self-locking, while is the first normal open switch KM1 of the A.C. contactor, second normally opened It switchs KM2, third normal open switch KM3 to be closed, the coil KT of the time relay is powered;
The coil KT of the time relay, which is powered, starts timing, if reaching machine before the setting time of the time relay Hole motor M starting switches are opened, the coil KT electrifications of the electric current relay, the normal open switch KA2 of the electric current relay It is closed, secondary circuit stablizes conducting, motor-pumped well motor M normal works;
If reaching motor-pumped well motor M starting switches before the setting time of the time relay not to be activated, major loop is without electricity Stream, the coil KA of the electric current relay is not charged, and the normal open switch KA2 and normally closed switch KA1 of the electric current relay are motionless Make, the time relay normally closed switch KT1 is disconnected when reaching the time relay setting time, the A.C. contactor Coil KM dead electricity, the 4th normal open switch KM4 of the A.C. contactor in secondary circuit disconnects, and secondary circuit disconnects, described Motor-pumped well control cabinet is stopped, thus avoid the motor-pumped well control cabinet the motor-pumped well motor not the operating time phase be in it is standby State causes waste of energy.
After motor-pumped well motor M starting switches are closed, major loop no current, the coil KA dead electricity of the electric current relay, institute State the normal open switch KA2 disconnections of electric current relay, the normally closed switch KA1 of the electric current relay is closed, the time relay Coil KT electrifications start timing, when reaching setting time, the time relay normally closed switch KT1 is disconnected, and makes the exchange The coil KM dead electricity of contactor, the first normal open switch of A.C. contactor KM1, the second normal open switch KM2 in major loop, Three normal open switch disconnect KM3, cut off main circuit power.After the motor-pumped well motor M is closed, pass through prolonging for the time relay Shi Zuoyong, the first normal open switch KM1, the second normal open switch KM2, the third normal open switch of A.C. contactor described in major loop KM3 delays disconnect, and avoid damage of the high current to A.C. contactor when cutting off the power in major loop, extend the exchange and connect The service life of the electrical equipments such as tentaculum, the electric current relay, while in turn avoid the exchange in the motor-pumped well control cabinet Electric energy loss caused by contactor, the electric current relay, the time relay are long charged.
The advantageous effect of motor-pumped well control cabinet provided in an embodiment of the present invention is:Compared with prior art, the present invention is implemented A kind of motor-pumped well control cabinet and control method, A.C. contactor that example provides are released the button, the time relay, electric current relay;It is main In circuit, first normal open switch KM1 one end of the A.C. contactor is used to connect the A phases electricity in three phase mains, and the other end is used In the A phase electrical inputs of connection motor-pumped well motor M;Second normal open switch KM2 one end of the A.C. contactor is used to connect three-phase B phases electricity in power supply, the other end are used to connect the B phase electrical inputs of motor-pumped well motor M;The third of the A.C. contactor is normally opened to be opened KM3 one end is closed for connecting the electricity of the C phases in three phase mains, the other end is used to connect the C phase electrical inputs of motor-pumped well motor M;It is described The coil of electric current relay be connected in series in the first normal open switch KM1 and motor-pumped well motor M A phases electrical input it Between or the B phase electrical inputs of the second normal open switch KM2 and motor-pumped well motor M between or the third is normally opened opens Between the C phase electrical inputs for closing the KM3 and motor-pumped well motor M;In secondary circuit, the 4th normal open switch of the A.C. contactor KM4 is connected in parallel with the SB that releases the button, one end connection C phase electricity of the 4th normal open switch KM4 of the A.C. contactor, the other end Connect the first node;The first branch and the second branch are connected in parallel between first node and the second node;Described second Node connectedness B phases electricity;The first branch includes time relay coil KT and electric current relay normally closed switch KA1, when described Between the relay coil KT and electric current relay normally closed switch KA1 be connected in series with;The second branch includes the exchange and connects Tentaculum coil KM, the time relay normally closed switch KT1 and the electric current relay normal open switch KA2, the ac contactor Device coil KM is connected in series with the time relay normally closed switch KT1, the time relay normally closed switch KT1 and the electricity Current relay normal open switch KA2 is connected in parallel.Motor-pumped well control cabinet provided by the invention and control method, when the zero load of motor-pumped well control cabinet It is automatically cut off the power during operation, avoids idling consumption, save electric energy.
Further, the motor-pumped well control cabinet, further includes:Electric energy meter;The electric energy meter is connected in series in Between the B phases electricity and second node, for measuring and showing the electricity consumption of motor-pumped well motor M, convenient for according to user power utilization Measure carry out expense calculating.
Further, the motor-pumped well control cabinet further includes:Phase failure protector;The first coil string of the phase failure protector Connection is connected between the A phase electrical inputs of the first normal open switch KM1 and the motor-pumped well motor M of the A.C. contactor, described Second coil of phase failure protector is connected in series in the second normal open switch KM2 and the motor-pumped well motor M of the A.C. contactor B phase electrical inputs between, the third that the tertiary coil of the phase failure protector is connected in series in the A.C. contactor is normally opened Between the C phase electrical inputs for switching the KM3 and motor-pumped well motor M;The normally closed switch of the phase failure protector is connected in series in institute It states between the second node and B phases electricity;The phase failure protector is used for when the phase failure protector Coil Detector to three-phase electricity When any phase in source or multiphase electricity decompression, the normally closed switch of the phase failure protector is disconnected, the ac contactor coil KM loses Electricity, the first normal open switch KM1, the second normal open switch KM2, the third normal open switch KM3 of the A.C. contactor are disconnected, cut-out master Circuit, to achieve the purpose that the protection motor-pumped well motor M.
Further, the motor-pumped well control cabinet further includes:Multiple indicator lights;First indicator light one end is used for and the electricity The A phases electrical input connection of machine M, the other end are connect with the neutral conductor;Second indicator light one end is used for and the B phases of motor M electricity Input terminal connects, and the other end is connect with the neutral conductor;Third indicator light one end is used to connect with the C phase electrical inputs of the motor M, The other end is connect with the neutral conductor;By setting indicator light, according to the light on and off of indicator light, the three of the motor-pumped well motor M is conveniently checked Whether the power supply of phase power input is normal.
Further, the motor-pumped well control cabinet further includes:Breaker;First normal open switch of breaker is connected in series with Between the A phase electrical inputs of the first normal open switch KM1 and the motor-pumped well motor M of the A.C. contactor;The breaker The B phases electricity that second normal open switch is connected in series in the second normal open switch KM2 and the motor-pumped well motor M of the A.C. contactor is defeated Enter between end;The breaker third normal open switch is connected in series in third normal open switch KM3 and the institute of the A.C. contactor Between the C phase electrical inputs for stating motor-pumped well motor M;The breaker is used for power supply in hand off major loop, as by secondary Circuit automatically controls the supplement of the mode of the A.C. contactor cut-out main circuit power;Hand off is provided with cutting automatically simultaneously Disconnected two ways, it can be ensured that cut off the power preferably protect the motor-pumped well motor M in time.
Further, the motor-pumped well control cabinet further includes:Fuse;The fuse is connected in series in the C phases electricity Between the SB that releases the button, for when secondary loop current be more than predetermined threshold value when disconnect described in release the button SB with it is described The connection of C phases electricity is protected in the control cabinets such as the A.C. contactor, the time relay, the electric current relay Each electrical equipment is burnt due to electric current is excessive.
Further, for the SB that releases the button for wink ejector half button, service life is long, is swift in response.
Further, the A.C. contactor is 380V A.C. contactors, relative to 220V A.C. contactor pressure resistance ranges Greatly, it is hardly damaged.
The embodiment of the present invention also provides a kind of motor-pumped well control method based on the motor-pumped well control cabinet, includes the following steps:
After the SB that releases the button is pressed, motor-pumped well control cabinet is started to work, the coil KM electrifications of the A.C. contactor, 4th normal open switch KM4 of the A.C. contactor is closed, and realizes the A.C. contactor self-locking, and the first of A.C. contactor is normal It switchs KM1, the second normal open switch KM2, third normal open switch KM3 to be closed, the coil KT of the time relay is powered;
The coil KT of the time relay, which is powered, starts timing, if reaching machine before the setting time of the time relay Hole motor M starting switches are opened, and the coil KT electrifications of the electric current relay, the normal open switch of the electric current relay is closed KA2, secondary circuit stablize conducting, motor-pumped well motor M normal works;
If reaching motor-pumped well motor M starting switches before the setting time of the time relay not to be activated, major loop is without electricity Stream, the coil KA of the electric current relay is not charged, and the normal open switch KA2 and normally closed switch KA1 of the electric current relay are motionless Make, the time relay normally closed switch KT1 is disconnected when reaching the time relay setting time, the A.C. contactor Coil KM dead electricity, the 4th normal open switch KM4 of the A.C. contactor in secondary circuit disconnects, and secondary circuit disconnects, motor-pumped well Control cabinet is stopped;
After motor-pumped well motor M starting switches are closed, major loop no current, the coil KA dead electricity of the electric current relay, institute State the normal open switch KA2 disconnections of electric current relay, the normally closed switch KA1 of the electric current relay is closed, the time relay Coil KT electrifications start timing, when reaching setting time, the time relay normally closed switch KT1 is disconnected, and makes the exchange The coil KM dead electricity of contactor, the first normal open switch of A.C. contactor KM1, the second normal open switch KM2 in major loop, Three normal open switch disconnect KM3, cut off main circuit power.
Further, the setting time of the electric current relay is 5 minutes.
Motor-pumped well control method provided by the invention automaticallys cut off the power when motor-pumped well control cabinet no-load running, avoids standby Electric energy is saved in loss.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.

Claims (10)

1. a kind of motor-pumped well control cabinet, which is characterized in that including:A.C. contactor is released the button, the time relay, electric current relay Device;
In major loop, first normal open switch one end of the A.C. contactor is used to connect the A phases electricity in three phase mains, the other end For connecting the A phase electrical inputs of motor-pumped well motor;Second normal open switch one end of the A.C. contactor is used to connect three-phase electricity B phases electricity in source, the other end are used to connect the B phase electrical inputs of motor-pumped well motor;The third normal open switch of the A.C. contactor One end is used to connect the C phases electricity in three phase mains, and the other end is used to connect the C phase electrical inputs of motor-pumped well motor;
The coil of the electric current relay is connected in series in the A phase electrical inputs of first normal open switch and the motor-pumped well motor Between or second normal open switch and the B phase electrical inputs of the motor-pumped well motor between or the third normal open switch Between the C phase electrical inputs of the motor-pumped well motor;
In secondary circuit, the 4th normal open switch of the A.C. contactor is connected in parallel with releasing the button, the A.C. contactor The 4th normal open switch one end connection C phase electricity, the other end the first node of connection;The first branch is connected in parallel in the second branch Between first node and the second node;The second Node connectedness B phases electricity;
The first branch includes time relay coil and electric current relay normally closed switch, the time relay coil and institute Electric current relay normally closed switch is stated to be connected in series with;
The second branch includes the ac contactor coil, the time relay normally closed switch and the electric current relay Normal open switch, the ac contactor coil are connected in series with the time relay normally closed switch, and the time relay is normal Make and break pass is connected in parallel with the electric current relay normal open switch.
2. motor-pumped well control cabinet according to claim 1, which is characterized in that further include:Electric energy meter;The electrical energy measurement Table is connected in series between the B phases electricity and second node, for measuring and showing the electricity consumption of motor-pumped well motor.
3. motor-pumped well control cabinet according to claim 1, which is characterized in that further include:Phase failure protector;The open-phase protection The first coil of device is connected in series in the first normal open switch of the A.C. contactor and the A phase electrical inputs of the motor-pumped well motor Between, the second coil of the phase failure protector is connected in series in the second normal open switch of the A.C. contactor and the motor-pumped well Between the B phase electrical inputs of motor, the tertiary coil of the phase failure protector is connected in series in the third of the A.C. contactor Between normal open switch and the C phase electrical inputs of the motor-pumped well motor;The normally closed switch of the phase failure protector is connected in series in institute It states between the second node and B phases electricity.
4. motor-pumped well control cabinet according to claim 1, which is characterized in that further include:Multiple indicator lights;First indicator light one End connect for the A phase electrical inputs with the motor, and the other end is connect with the neutral conductor;Second indicator light one end be used for it is described The B phases electrical input connection of motor, the other end are connect with the neutral conductor;Third indicator light one end is used for and the C phases of motor electricity Input terminal connects, and the other end is connect with the neutral conductor.
5. motor-pumped well control cabinet according to claim 1, which is characterized in that further include:Breaker;The breaker first is normal Switch is connected in series between the first normal open switch of the A.C. contactor and the A phase electrical inputs of the motor-pumped well motor; Second normal open switch of breaker is connected in series in the second normal open switch of the A.C. contactor and the B of the motor-pumped well motor Between phase electrical input;The breaker third normal open switch be connected in series in the third normal open switch of the A.C. contactor with Between the C phase electrical inputs of the motor-pumped well motor.
6. motor-pumped well control cabinet according to claim 1, which is characterized in that further include:Fuse;The fuse series connection connects Be connected to C phases electricity and it is described release the button between, for disconnecting the unlatching when secondary loop current is more than predetermined threshold value The connection of button and the C phases electricity.
7. motor-pumped well control cabinet according to claim 1, which is characterized in that described to release the button as wink ejector half button.
8. motor-pumped well control cabinet according to claim 1, which is characterized in that the A.C. contactor is 380V ac contactors Device.
9. a kind of motor-pumped well control method based on any one of the claim 1-8 motor-pumped well control cabinets, which is characterized in that including with Lower step:
It is described release the button be pressed after, the motor-pumped well control cabinet is started to work, the coil electrification of the A.C. contactor, described 4th normal open switch of A.C. contactor is closed, and realizes the A.C. contactor self-locking, while the first of the A.C. contactor Normal open switch, the second normal open switch, third normal open switch are closed, and the coil of the time relay is powered;
The coil of the time relay, which is powered, starts timing, if reaching motor-pumped well motor before the setting time of the time relay Starting switch is opened, major loop conducting, and the coil electrification of the electric current relay, the normal open switch of the electric current relay closes It closes, secondary circuit stablizes conducting, the motor-pumped well motor normal work;
If the motor-pumped well motor start switch is not activated before reaching the setting time of the time relay, major loop is without electricity Stream, the coil of the electric current relay is not charged, and normal open switch and the normally closed switch of the electric current relay are failure to actuate, when described Between relay normally closed switch disconnected when reaching the time relay setting time, secondary circuit disconnects, motor-pumped well control Case is stopped;
After the motor-pumped well motor start switch is closed, major loop no current, the coil losing electricity of the electric current relay, the electricity The normal open switch of current relay disconnects, the normally closed switch of the electric current relay is closed, the coil electrification of the time relay Starting timing, when reaching setting time, the time relay normally closed switch disconnects, the coil losing electricity of the A.C. contactor, The first normal open switch of the A.C. contactor, the second normal open switch, third normal open switch in major loop disconnect, and cut off major loop Power supply.
10. motor-pumped well control method according to claim 9, which is characterized in that the setting time of the electric current relay is 5 Minute.
CN201711374596.1A 2017-12-19 2017-12-19 Motor-pumped well control cabinet and control method Active CN108173242B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110086404A (en) * 2019-06-06 2019-08-02 国家电网有限公司 Power consumption control system and method

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JPH08231193A (en) * 1995-02-24 1996-09-10 Meidensha Corp Long lifting height inverter hoist
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CN201098739Y (en) * 2008-02-13 2008-08-13 梁磊 Lathe idling automatic stopping electricity-saving device
CN202085114U (en) * 2011-06-10 2011-12-21 任旭华 Battery-friendly controller for pressure reduction start of high power motor and convertion between star and triangle for running
CN203617691U (en) * 2013-12-10 2014-05-28 路振田 Water pump wireless remote control open-phase protection receiver
CN204696653U (en) * 2015-04-29 2015-10-07 高荣生 Phase shortage automatic control equipment off zero

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08231193A (en) * 1995-02-24 1996-09-10 Meidensha Corp Long lifting height inverter hoist
CN2336496Y (en) * 1998-09-12 1999-09-01 彭永文 Safety supply unit
CN201098739Y (en) * 2008-02-13 2008-08-13 梁磊 Lathe idling automatic stopping electricity-saving device
CN202085114U (en) * 2011-06-10 2011-12-21 任旭华 Battery-friendly controller for pressure reduction start of high power motor and convertion between star and triangle for running
CN203617691U (en) * 2013-12-10 2014-05-28 路振田 Water pump wireless remote control open-phase protection receiver
CN204696653U (en) * 2015-04-29 2015-10-07 高荣生 Phase shortage automatic control equipment off zero

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110086404A (en) * 2019-06-06 2019-08-02 国家电网有限公司 Power consumption control system and method

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